Saturday 13 February 2010 02.50 EST
First published on Saturday 13 February 2010 02.50 EST

Shortlisted:

The Heart's Fluid Dance: Blood flow through the heart. “We are creating computer simulations of the heart in action, in an attempt to understand better the dynamics of this entwined, sinuous dance”
Dr Philip Kilner, Imperial College London Photograph: British Heart Foundation

Shortlisted:

The Tree of Life: “The muscle cells of the heart intertwine like the branches of a great banyan tree. This intricate structure is essential for generating force to pump blood around the body.” The image shows the orientation of cells deep within the heart, visualised with 'multiphoton fluorescence microscopy'.
Dr Patrizia Camelliti, University of OxfordPhotograph: British Heart Foundation

Shortlisted:

COS Cell or Crab Nebula?
COS cells like this one are engineered to make human forms of two proteins thought to regulate the structure of heart cells. “Staining the proteins with fluorescent antibodies allows us to see their location in the cell, and also produces images resembling something one would see from a space telescope, much less a microscope.”
Joseph Dwyer, King’s College LondonPhotograph: British Heart Foundation

Shortlisted:

The Megakaryocytic Supernova. Megakaryocytes are bone marrow cells that produce blood platelets, which are vital for clotting. This image shows a megakaryocyte 'skeleton' made of F-actin (red) and tubulin (green) proteins. DNA is stained blue. “We are studying how platelets are born from megakaryocytes. In so doing, we hope to gain a better understanding of how to control the number of platelets in the blood, which could lead to new treatments for bleeding disorders.”
Ms Hannah Schachtner, University of Glasgow Photograph: British Heart Foundation

Runner-up:

Heart Strings. This image was generated from an MRI scan of a heart using a technique called diffusion tensor imaging. The scan tracks the movement of water molecules, revealing how the muscle cells are aligned. The streamlines represent the orientation of muscle fibres in the heart’s left ventricle. 'A future application of our research would be to determine how the structure of the heart is damaged during a heart attack, and the mechanisms by which it repairs itself'
Dr Patrick Hales, University of OxfordPhotograph: British Heart Foundation

Winner:

Looking Through the Heart. When fatty plaques are deposited in our arteries, white blood cells move from the blood into the vessel wall, and the wall becomes inflamed. The cells in this image are producing actin (red) and collagen (green). The cells’ nuclei are coloured blue. “Both actin and collagen play a key role in recruiting white blood cells when tissue becomes inflamed. A better understanding of how white blood cells interact with different components of the vessel wall will help us identify new ways to treat the inflammatory conditions that underlie cardiovascular disease.”
Dr Mathieu-Benoit Voisin & Miss Doris Proebstl, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary, University of LondonPhotograph: Imaris/British Heart Foundation